EvTimer::__construct Constructs an EvTimer watcher object &reftitle.description; public EvTimer::__construct float after float repeat callable callback mixed data &null; int priority 0 Constructs an EvTimer watcher object. &reftitle.parameters; after Configures the timer to trigger after after seconds. repeat If repeat is 0.0 , then it will automatically be stopped once the timeout is reached. If it is positive, then the timer will automatically be configured to trigger again every repeat seconds later, until stopped manually. callback See Watcher callbacks . data Custom data associated with the watcher. priority Watcher priority &reftitle.returnvalues; Returns EvTimer object on success. &reftitle.examples; stop(); // Stop the watcher if further calls cause more than 10 iterations Ev::iteration() >= 10 and $w->stop(); }); // Create stopped timer. It will be inactive until we start it ourselves $w_stopped = EvTimer::createStopped(10, 5, function($w) { echo "Callback of a timer created as stopped\n"; // Stop the watcher after 2 iterations Ev::iteration() >= 2 and $w->stop(); }); // Loop until Ev::stop() is called or all of watchers stop Ev::run(); // Start and look if it works $w_stopped->start(); echo "Run single iteration\n"; Ev::run(Ev::RUN_ONCE); echo "Restart the second watcher and try to handle the same events, but don't block\n"; $w2->again(); Ev::run(Ev::RUN_NOWAIT); $w = new EvTimer(10, 0, function() {}); echo "Running a blocking loop\n"; Ev::run(); echo "END\n"; ?> ]]> &example.outputs.similar; &reftitle.seealso; EvTimer::createStopped EvPeriodic ev_timer - relative and optionally repeating timeouts Be smart about timeouts